Mono-disperse carbon microspheres are hydrothermally synthesized in an oxygen isolated system protected by nitrogenous gas and assisted by aqueous ammonia, with glucose as precursor. Effects of different carbon sources, types of matching materials, concentration of aqueous ammonia and nitrogen protection time on the particle size distribution and morphology of carbon microspheres are investigated. The morphology and composition of the synthesized carbon microspheres are characterized by SEM, BET, XRD, FT-IR, XPS and particle size analyzer. Its ...